EFFECT OF FORCE MOLTING ON EGG QUALITY TRAITS OF BROILER BREEDER HENS

Abstract

One hundred fifty three, sixty weeks of age of broiler breeders were used in this experiment to investigate the effects of supplementation of different levels of zinc oxide (ZnO) and AD3E vitamins on egg quality. The experimental treatments were T1: Control diet [without adding ZnO and vit. AD3E], T2: T1 + 2 gm/kg of vit. AD3E, T3: T1 + 25000 ppm of ZnO, T4: T1 + 25000 ppm ZnO + 2 gm/kg vit. AD3E, T5: T1 + 30000 ppm ZnO, T6: T1 + 30000 ppm ZnO + 2 gm/kg vit. AD3E, T7: T1 + 35000 ppm of ZnO and T8: T1 + 35000 ppm ZnO + 2 gm/kg vit. AD3E. The results obtained from this study were summarized as: The effects of interactions between treatments and age periods significantly (P<0.01) affected yolk and albumin weight, egg shell thickness, albumin height, Haugh unit score, yolk height, yolk diameter and yolk index traits.